Ventilator-cowl for ships.



J. JENKINS.

VENT!LATOR COWL FOR SHIPS.

APPLICATION FILED OCT- 10, 1916 INVENTOR ATTORNEYS Patented June 5, 1917.

WITNESS m: NORI'IIS wnsns ca, PHOTO-Tull, wAsnmnwN, I)v c PATENT FHFlQE.

JOHN JENKINS, 0F DALMUIR, SCOTLAND.

VENTILATOR-COWL FOR SHIPS.

Application filed October 10, 1916.

To all who/2t it may concern:

Be it known that 1, Joan Jan runs, a. subject of the King of Great Britain, residing at Dalmuir, in the county of Dumbarton, Scotland, have invented certain new and useful Improvements in Ventilator-Cowls for Ships, of which the following is a specification.

My invention relates to improvements in ventilator cowls for ships and particularly has for its object the providing of a simple down-draft ventilator or improved means for preventing the ingress of water to the ventilating trunk upon which the cowl is arranged and adapted to be fitted.

In the drawings forming a part of this specification and in which the same reference characters are employed throughout the various views to designate the same parts, Figure 1 is a central vertical section of my improved ventilator cowl; Fig. 2 is a front elevational view; Fig. 3 is a horizontal section taken on the line 8-3 of Fig. 1; and Fig. 4L is a horizontal section taken on the line H of Fig. 1.

As shown in the drawings, a ventilator cowl made in accordance with this invention comprises essentially two coaxial substantially cylindrical structures or members A being rotatable relatively to the outer one A. on a pivot A in the upper closed ends of the structure or members A, A The whole cowl, comprising the members A, A is rotatably mounted in the usual manner upon a suitable ventilating trunk (not shown) and the two structures or members A, A are preferably connected together by stays B, B hinged at their upper ends to the outer structure A and removably attached at their lower ends to the inner structure A In the inner and outer structures or members A, A are provided segmental apertures C, C that is to say, apertures which are rectangular in shape with their longer sides substantially parallel with the axis of the structures or members A, A

The member A may be rotated with respect to the member A so that both apertures C, C face in the direction of the wind, but when the possible ingress of water is to be prevented, the stays B, B are disconnected and the structure or member A is ro tated with respect to the structure A so that the apertures C, C are set diametrically opposite to one another, in which position they are shown in Figs. 1, 9. and 3 of the Specification of Letters Patent.

Paten ted June 5, 1917.

Serial No. 124,754.

drawings. The apertures C, C may be pro vided with louvers.

in the annular segmental space between the cylindrical structures A, A are arranged lip-like battles D extending inwardly from the outer structure A and outwardly from the inner structure A and they are arranged in a staggered position with respect to each other so as to cause the ingoing, spray-laden air to be deflected over and around them. Two other baiiles D D are also carried by the outer structure or member A so that they lie in the center of the annular space between the members A, A one on each side of the aperture C in the inner structure or member A when the parts are in the position shown in Figs. 1 and 3.

In the open annular space between the lower edge or skirt of the outer member or structure A and the outer surface of the inner structure A are arranged series of annular louvers E, E oppositely angled, which, while they permit of the draining out of any water in the space between said members, prevent the entry of spray with which ingoing air may be laden. To further assist in preventing the upward passage of water above the louvers E, E the inner structure A carries at the lower edge of the aperture C therein a series of louvers G overlapping each other. At a little dis tance from the inner surface of the outer structure A and opposite the aperture C in the inner structure A? when the latter is in the position shown in Figs. 1 and 3, is supported a perforated plate G This plate G carries on its face, which is. adjacent the inner member A a series of oppositely angled vertical bafiles G Vertical lips H are provided at the vertical edges of the aperture C in the inner structure A and at the lower edge of this aperture C is a well H communicating by way of an aperture orpassage H with the outside of the inner structure A below the skirt of the outer structure A. In the well .H is also provided a lipped aperture or air passage J communicating with the interior members A, A outside of the inner member subjected to the action of bathe plates which prevent'the ingress of water into the interior of the inner member or structure A and that the water or spray which may collect upon the interior of the outer structure A or the exterior of the inner structure A or the baiiieplates provided as above set forth within the space between the inner and outer members or'structures A, A is free to drop out of the space between the inner and outer A andany moisture which collects atan'd falls from this surface of the inner member A? adjacent the opening C collects in the well H from which it is conducted through the passage, H to the outside of the inner member A i Havingjthus described my invention I cut of the United States: 7 1.1111 ai'ventilator cowl for ships, the

claimand desire to protect by Letters Pat-' drical st ructures or members one within "the other and each provided with a segmen-v tal aperture respectively, bafiies on said structuresextending into the space between them, louvers" in the'lower open end ofthe spacebetween said structuresand awell at the lower edge of the aperture in the inner of said structures, said well being provided at its bottom with apertures communicating -with both the insideand the outside of said lnner structure. ,7 e a I V a 2. 111 2 at ventilator cowl e'ior ships, the

combination of two coaxial substantially cylindrical structures one within the other 'and'feach provided witha segmental aper ture respect1vely,'bafiles on said structures,

extending into the space between them,

, louvers in the lower open end of the space between" said structures, and a well at the lower edge of the aperture in the inner structure, said well being provided with apertures communicating with the outside I of said inner. structures and with an air passage a little'above the bottom of said well and communicating with the interior of said inner structure. a

.drical structures one within the other and 8. In a ventilator cowl for ships, the combination of two coaxial substantially cylineach provid d with a segmental aperture oppositely angled, vertical baffles extendmg respectively, said apertures being on oppo site sides of the axis. of said structures, a perforated plate extending in the space between said structures and arranged between the inner surface of the outer structure and the said aperture in the inner structure and from that face of said perforated plate which is adjacent saidaperture in said inher structure. V

a In a ventilator cowl for ships, the comdenies of this patent may be obtained for outer structure in the space between said com-' bination of two coaxial substantially cylininner and outer members.

bination of two coaxiai substantially cyliir' I drlcal structures one w thin the othe a each provided with asegmental aperture respectively, two ser es of angular'louvers oppositely angled with respect toeach other and positioned within the lowervend 'oithe structures and a further series of overlapping iouvers above the said seriesjoi angular louvers, mounted on said inner member: at substantially the lower edge of the aperture in' said inner member. I In a ventilator cowl for ships, the com bination of an outer cylindrical member provided with an aperture in the side thereof, an inner cylindrical member mounted" coaxially with said outer member and also 'provlded with a similar aperture through the side thereof, the space between said members afiordinga passage for, air'between said members to the opening in said lnner member, vert cally extending baiile plates in the inner surface of the outer member providedwith an aperture in the side there a provided with a similar aperture through the side thereoi, the space between said oI","an inner cylindrical member mounted f COlXlEtllY withsaid outer member and also members affording a passage for air between said membersto the opening'in said inner member, vertically extending bafiie plates in theinn'er' surface of the outer member and the outer surface of said inner member, louvers between the said inner and,

outer members positioned at the lower end of said outer member, ,a series of louvers secured to said inner member adjacent the bottom edge of the said aperture therein and extending substantially between i said inner and outer members, an air passage ex tending between the space between said members and the interior of said inner member downwardly from a point adjacentthc lower edge of the opening in said inner member to a point below the lower edge oi said outer member and means to collect moisture in saidpassage and discharge it outside of said inner member.

In witness whereof I have hereunto set my hand this 22nd day of September, D. 1916. a

five cents each, by addressing the Commissioner of Eatenta Washingtoxnl). G,

enn JENKINS; i 

